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Application filed by Wladyslaw Wisniewski, Jan PiotrowskifiledCriticalWladyslaw Wisniewski
Priority to PL94302668ApriorityCriticalpatent/PL175274B1/en
Publication of PL302668A1publicationCriticalpatent/PL302668A1/en
Publication of PL175274B1publicationCriticalpatent/PL175274B1/en
PL94302668A1994-03-161994-03-16Filtering sewage treatment filters and method of regenerating the filters of such sewage treatment plant
PL175274B1
(en)